()=10...(10?)??[0;10]0??[0;10]th?i gian b?o hành s?n ph?m ???c quy ??nh là 3 n?m. a)xác ??nh k. b)tính t? l? s?nph?m ph?i b?o hành. c)tính xác su?t ?? trong 10 s?n ph?m bán ra có không quá 2 s?n ph?m ph?i b?o hành. d)bi?t r?ng m?i s?n ph?m bán ra ???c lãi 1 tri?u ??ng, nh?ng n?u s?n ph?m b? h?ng trong th?i gian b?o hành thì ph?i chi phí 700 ngàn ??ng cho vi?c s?a ch?a, s?n ph?m s?n xu?t ra ??u tiêu th? ???c h?t. tính s? ti?n lãi trung bình trên m?i s?n ph?m ???c bán ra.
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Category: geography |
Author: Valko Tomer
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